Liquid-treating apparatus



May 5, 1925.4 1,535,055

Klvw. BAR-:LETT

LIQUIDTREATING APPARATUS vFil'afsan. 5o. 1925 y 5%.

Patented May 5, 1925.

UNITED `STATES KENT W. BARTLETT', OF HAMMOND, INDIANA.

Application filed January 30, 1923.` Serial No.` 615,835.

j paratus, of which thefollowing is a full,

clear, concise, and eXact description.

My invention relates to liquid treating apparatus employing `a storage tank that receives the liquid to be treatedand in which treatment is eifected, a source of chemical discharged into the treat-ment tank, and

mechanism governed by the raw liquid for maintaining the proportioning of raw liquid and chemical substantially constant.

H itherto it was possible so to varythe pressure upon the treated liquid being dis charged, as by means of a pump, as to permit the incoming raw liquid to be received at a rate in excess of the capacity of the apparatus. 'This wouldprevent or disturb the proper action of chemical upon the liquid since the reaction time would be reduced.

M v invention is of particular; service in connection with water softening apparatus and in, accordance with the preferred em bodiment of the invention the softened water is received in a discharge pipe having areceiving opening that is above the outlet pipe and sui'liciently below the lower limiting level of the liquid in the treatment tank as to maintain a natural gravity pressure or head upon the outgoing softened water which will prevent the softened water from being removed froin `the treatment tank beyond the predetermined rate so as to maintain thereaction time. intact.

ln, the preferred embodiment of the invention a discharge pipe is employed `that has an upright portion desirably located wholly within the treatment tank and termi hating alimve or at the upper limiting level in the tank and there open to the air. This pipo portion within the `treeatment tank has a liquid receiving opening in its side that .is located a desired distance below the lower llmiting level of the treatmenttank to provide the desired head upon the outgoing liquid. If it .is sought to .increase the natural flow of the outgoing liquid by pump pressure it is obvious that this undesired `result can not be secured except by the amo-unt of liquid in the pipe `that is above said liquid receiving opening. I will explain my invention more fully by reference to the accompanying drawing in which Fig. l is a vertical sectional view, somewhat idiagran'nnatic, illustrating the preferred embodiment of the invention as parts of the equipment being shown in full elevation; and Fig. 2 isa sectional view, on a larger scale, on line 2-2 of Fig. l.

i Like parts are indicatedjby similar characters of reference in both iigures.

The water softening or liquid treating apparatus illustrated` includes a riser l which `is desirably formedwithin and includesa portion of the cylindrical wall of the larger riser 2 projecting into the treatment and storage tank 3, the Ina-jor portions of the chemical reactions occurring in the riser 2 `to softenthe water therein, the l i softened water flowing to the space sur-` rounding the riser 2 and being disclnn'ged from the treatment tank through the outlet pipe 4i to be used for the purpose for which the water is softened. l

As illustrated, the riser l includes an upright wall 4c and a bottom wall 6, these two walls being located at the upper portion of the riser 2 and cooperating with a portion of the cylindrical wall thereof to form the riser l. Two containers 7` and 8 receive the raw water from the riser l which is formed with a larger opening 9 discharging into the container to which -it is individual and both openings are` below the limiting level of each container.

A supply pipe ll is connected with the city water main or any other source of raw water that to be softei'led, a valve l2 being included in thc pipe for regulating the volume of water .tl owing therethrough. This pipe discharges into the riser l` below the openings 9 and l() and terminates above the containers 7 and 5l so as to `furnish a vhead. to force the flow of water through said openings and over the rims of the contain-- ers. The` container 7 overflows iutothe treatment tank and the contaiijier 8 over- .flows into the Heat tank 'l Chemical is also admitted to the treatment tank from the chemical tank 14: that discharges through the outlet l5. The flow of chemical through the outlet is regulated by the position of the swinging pipe section 1G that is in communication with the outlet l5. As will appear, this swinging pipe section is lowered asthe amount of raw water supplied for treat-l ment increases to maintain the proportion of chemical and raw Water substantially con,-

Matmata stant, A lloat 17 tloats in the raw water admitted to the float tank 13. A eable- 18 is connected at one end with the float and passes over the pulleys 19' and 20 into connection with the outer or unanchored end ot' the swinging pipe section 1G. Obviously, raw water tiows into the treatment tank and tloat tank in lixed proportion with less water .flowing into the tloat tank than into the treatment tank owing to the dill'ference in the sizes ot' the openings 9 and 10. As the water in the tloat tank 13 rises the. float 17 will rise to permit the pipe 1.6 to lower gradually to increase the rate ot flow of chemical into the treatment tank. A float 21 floats in the softened water inthe treatment tank, this Heat being' carried upon an arm 22 that is coupled with the valve 12 in a manner to decrease the rate of tlow ot incoming raw water as the float 21 rises.

rl`he float 21 will be lifted by the water in the treatment tairk, when it reaches the upper limiting level A, to close the valve 12. Then softened water has been removed to an extent to bring the water in the. treatment tank to the lower limiting level. B, the float 21 will be lowered to permit the. val-ve 12 to be fully opened, the opening action ot' the valve being gradual from its closed to its fully openedposition. The receiving orilice 23 is formed through` a side of the upright discharge pipe 24 that discharges into the outlet pipe 4 that is beneath pipe 24. The head of the water above the center of the receiving oriiice 23 is sutlicient to maintain the rate of How of the outgoing treated water through this orilice equal to the rate ot ilow ot the raw water being supplied to the tank, the rate -o'liy Yflow ot the raw water into the machine and the rate ot tlow ol treated water -from the machine being equal and never exceeding the rated capacity ot the machine atte-r water reaches level B.

then the machine is at rest, a column of water is located in the discharge piping 24 not only in the portion of this piping that is below the water receiving opening 23 but in the portion ot this piping that intervenes between this opening and the limiting levels A and B above it.

1V hen softened water is being taken from the machine 'the water in the piping 24 will drop with reference to the level of the surrounding water to a point corresponding to the required head which cannot be eii'ectively greater than the head of water upon the outside of the pipe above the opening 23. rPhe sligh't increment ot water tlowing through the pipe 24 trom the. portion thereot' above the opening 3 is negligible and only occurs when the machine is first started.

lhile I have herein shown and particularly described the preferred embodiment of my invention l do not wish to be limited to the precise details et construction shown as changes may readily be made without departing trom the spirit of my invention, but having thus described my invention I claim as new and desire to secure by Letters Patent the following:-

1. Liquid treating apparatus including a treatment tank; a source et chemical; piping for conveying liquid to be treated to the tank; mechanism governed by liquid passing through said piping ope-rating to maintain the proportioning ot liquid and chemical substantially constant; mechanism governed by the liquid in the treatment tank for cutting ott` and establishing flow ot liquid to the treatment tank; an upright discharge pipe having a liquid receiving opening through its side and between its ends andr positioned to receive treated liquid trom the treatment tank and located below the lower limiting level ot' the liquid in the tank and having an opening at the upper limiting level of the liquid in the tank to have its contents subject te atmospheric pressure; and an outlet pipe below and comn'iunicating with the lower end ot' said discharge pipe.

2. Liquid storing apparatus including a storage tank; piping lor conveying liquid to the tank; mechanism governed by the liquid inthe tank tor cutting oliE and establishing flow of liquid to the tank; and discharge piping having a liquid receiving opening positioned to receive liquid troni the tank and located below the lower limiting level o'l the liquid in the tank and having an opening at the upper limiting level of the liquid in the tank to have its contents subject to atmospheric pressure.

In witness whereof, l hereunto subscribe my name this 15th day of January A. l). 1923.

KENT 1V. BRTLET. 

